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SUBSEQUENT EVENTS (Details) - Jul. 06, 2015 - Forecast - UTH - USD ($)
$ in Millions
Total
SUBSEQUENT EVENTS  
Percentage interest acquired in the entity (as a percent) 75.00%
Non-binding cash offer $ 200
Subsequent Event | Russian And Kazakhstan operations  
SUBSEQUENT EVENTS  
Percentage interest acquired in the entity (as a percent) 75.00%
Non-binding cash offer $ 200